Microwave properties of B2O3-doped Nd(Mg1/2Ti1/2)O3-CaTiO3 dielectric resonators at microwave frequency

被引：16

作者：

Huang, CL ^{[1
]}

Chen, YB ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan

来源：

MATERIALS LETTERS | 2006年 / 60卷 / 02期

关键词：

dielectric properties; microwave dielectric; microwave dielectric properties; X-ray;

D O I：

10.1016/j.matlet.2005.08.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of B2O3 addition on the microwave dielectric properties and the microstructures of (1-x)CaTiO3-xNd(Mg1/2Ti1/2)O-3 ceramics prepared by conventional solid-state routes have been investigated. Doping with 0.5 wt.% B2O3 can effectively promote the densification and the microwave dielectric properties of (1-x)CaTiO3-xNd(Mg1/2Ti1/2)O-3. It is found that CaTiO3-Nd(Mg1/2Ti1/2)O-3 ceramics can be sintered at 1300 degrees C due to the liquid phase effect of a B2O3 addition observed by scanning electronic microscopy (SEM). The system forms a solid solution throughout the entire compositional range. The dielectric constant decreases from 143 to 27 as x varies from 0.1 to 1.0. In the (1-x)CaTiO3-xNd(Mg1/2Ti1/2)O-3 system, the microwave dielectric properties can be effectively controlled by varying the x value. The microwave dielectric properties indicate the possibility of a phase transformation for x between 0.3 and 0.5. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：198 / 202

页数：5

共 11 条

[1] Dielectric properties of Ln(Mg1/2Ti1/2)O3 as substrates for high-Tc superconductor thin films [J].